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Neurological manifestation of lysosomal storage disorders
Májovská, Jitka ; Magner, Martin (advisor) ; Fajkusová, Lenka (referee) ; Aulická, Štefania (referee)
Objective: Lysosomal storage disorders (LSD) represent a rare cause of neurologic impairment in childhood and adulthood. The aim of our study was to characterize patients with late-onset form of Tay-Sachs disease (LOTS) and alpha-mannosidosis (AM) and to identify typical brain MRI findings. Methods: Patients with a genetically or enzymatically confirmed diagnosis of LOTS or AM and at least one brain MRI examination were included in the study. Results: We have characterized the clinical manifestation in a unique cohort of 14 Czech patients with LOTS. As results of international cooperation, we also published analysis of neuroradiological findings in 16 patients with LOTS disease and 14 patients with AM. Patients with LOTS clinically manifested by cerebellar symptoms, progressive motor neuron disease and psychiatric symptoms. A novel pathogenic variant c.754C˃T in HEXA gene was described in two brothers. Disease was outlined by the slower disease course, milder weakness of lower limbs, milder cerebellar symptomatology and normal cognitive function in them. The hallmark of neuroradiological findings was the cerebellar atrophy in both LOTS and AM. It was the pontocerebellar atrophy in LOTS, the finding which is also typical for spinocerebellar ataxia or multiple system atrophy. The concurrent presence...

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